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✏️ Editing: MathUtils.php

<?php
/*
* Copyright 2012 ZXing authors
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
*      http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/

namespace Zxing\Common\Detector;

final class MathUtils {

private function __construct() {

}

/**
     * Ends up being a bit faster than {@link Math#round(float)}. This merely rounds its
     * argument to the nearest int, where x.5 rounds up to x+1. Semantics of this shortcut
     * differ slightly from {@link Math#round(float)} in that half rounds down for negative
     * values. -2.5 rounds to -3, not -2. For purposes here it makes no difference.
     *
     * @param d real value to round
     * @return nearest {@code int}
     */
    public static function round($d) {
        return (int) ($d + ($d < 0.0 ? -0.5 : 0.5));
    }

public static function distance($aX, $aY, $bX, $bY) {
        $xDiff = $aX - $bX;
        $yDiff = $aY - $bY;
        return (float) sqrt($xDiff * $xDiff + $yDiff * $yDiff);
    }

}

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